西南交通大学学报2025，Vol.60Issue(5)：1160-1169,10.DOI:10.3969/j.issn.0258-2724.20240554
CFRP板新型夹持式锚具试验研究
Experimental Study on a New Clamping Anchor for Carbon Fiber Reinforced Polymer Plate
摘要
Abstract
To address the problem of uneven transverse compressive stress distribution in traditional carbon fiber reinforced polymer(CFRP)plate anchors,which makes the plate prone to tearing failure during the tensioning process,a new clamping anchor for CFRP plates was developed.The new anchor features a preloaded bolt arranged along the central axis.By setting the bolt length and controlling its displacement,a quantified compressive force was applied to the CFRP plate,and the force mechanism of the new anchor was analyzed.Next,finite element software ANSYS was used for simulation,and the key factors affecting anchorage performance were analyzed.Finally,a static tensile test was performed on a CFRP plate with a thickness of 2 mm and a width of 50 mm.The results are as follows:1)The anchorage performance of the new anchor is closely related to the clamp thickness,the outer clamp plate thicknesses,and the bolt preload force.When the clamp thickness is 20 mm,the transverse compressive stress distribution of the CFRP plate is relatively uniform,with a difference between the maximum and minimum compressive stresses of only 9.8 MPa.When the thicknesses of the upper and lower outer clamp plates are 30 mm and 20 mm,respectively,the bending stress of each component remains within a safe range.When the preload force of the bolt is 170 kN,the compressive stress level in the CFRP plate significantly increases,while the shear stress remains consistently low.2)In the static tensile test,the new anchor withstands a maximum tensile force of 260.7 kN,achieving an anchoring efficiency of 108.63%.The failure mode of the CFRP plate is fiber rupture,with no tearing or other abnormal failure modes observed.The anchor demonstrates excellent static anchorage performance.关键词
桥梁工程/CFRP板锚具/有限元分析/应力分布/静载张拉试验/锚固性能Key words
bridge engineering/CFRP plate anchor/finite element analysis/stress distribution/static load tension test/anchorage performance分类
交通工程引用本文复制引用
侯苏伟,田树恒,唐志强,席建英..CFRP板新型夹持式锚具试验研究[J].西南交通大学学报,2025,60(5):1160-1169,10.基金项目
国家自然科学基金项目(51508019) （51508019）
北京市教育委员会科技一般项目专项资金项目(KM202010016015) 北京建筑大学双塔计划—建大英才项目(JDYC20160206) （KM202010016015）
北京建筑大学市属高校基本科研业务费专项资金项目(X18115,X18091). （X18115,X18091）
